Process of making artificial ointment-bases.



SAMUEL KNOPF, 0F VIENNA, AUSTRIA-HUNGARY.

PROCESS OF MAKING ARTIFICIAL OINTMENT-BASES.

Specification of Letters Patent.

Patented Oct. 4, 1910.

N0 Drawing. Original application filed February 6, 1907, Serial No. 356,006. Divided and this application filed July 21, 1909.

To all whom it may concern:

Be it known that I, SAMUEL Kxorr, a citizen of the Empire of Austria-H1 mgary, residing at-Vienna, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in the Process of Making an Artificial Ointment-Base, of which the following is a specification, this application being a division of my prior application Serial No. 356,000, filed February 6, 1907. upon which Patent No. 941,785 was granted November 30, 1909.

The present invention relates to a process for the partial saponification of oleic acid by means of an alkali in the presence of alcohol without the application of heat, whereupon by an addition of mineral oil a transparent emulsion is formed, which by being mixed with ceresin, paraifin, or common bees wax or by being diluted with water in presence of these additions can be converted into solid ointment like products.

Heretofore mineral oils have been converted into emulsions by the addition of soaps and similar emulsions have also been produced by the introduction of fats or fatty acids into mineral oil and subsequent saponification by means of alkalies. In all these latter processes, the endeavor is, at times with an addition of alcohol, to effect as complete as possible a saponification, at ahigh temperature, 'and in certain cases with pres sure and a passing through of oxygen. The addition of alcohol ismostlyintended merely to dilute the final product.

\Vith the process forming the object of the present invention only a partial saponification of the oleic acid in the presence of alcohol and without the application of heat is effected. lVith this partially saponified mixture of oleic acid and alcohol, very large quantities of mineral oil can be reduced to an emulsion which differs essentially from all emulsions produced heretofore, as by mixing with ceresin, paraffin or wax a consistent Vaseline like substance is obtained which is particularly suitable for greasing the hands for example for surgical purposes as it can be entirely washed ofi' with cold water. Andif a large quantity of water be added to this Vaseline like substance a white Serial No. 508,808.

material is obtained which has the mppearance of lanolin, and can be used for many of the purposes for which lanolin is employed.

The mineral oil emulsion is produced by mixing about 40 parts of olcic acid with about 20 parts of alcohol and 8 parts of water be added to this, the lanolin like ma-- terial is produced. l

The ointment bases which have been known 1n trade for some time are either very dear or have the disadvantage that they are not easily absorbed by the skin, and resist incorporation with various medicaments and alter by contact with them. The ointment like substances produced according to the described process represent products which are as far as possible neutral and indifi'erent, and which are remarkable for their extraordinary cheapness and absorbency, and at the same time, contrary to the indifferent bases mostly used in trade, can be used for all kinds of ointments.

Having thus described my invention what I claim is.

1. Process for producing substances capable of being used as bases for ointments consisting in the mixing of oleic acid with alkali in the presence ofalcohol at ordinary atmospheric temperature in such proportions that only a partial saponification is produced and then adding mineral oil to'the mixture in the proportions specified, and then adding ceresin to this mixture for the purpose of obtaining a Vaseline, like material substantially as described- 2. Process for producing substances ca pable of being used as bases for ointments consisting in the mixing of olcic acid with alkali in the presence of alcohol at ordinary atmospheric temperature. in such proportions that only a partial saponification is produced and then adding mineral oil to In testimony whereof I hereunto afilx my the mixture in the proportnons specified, and slgnaturem presence of two wltnesses.

then uddin ceresin to the mixture and then, 1 T

adding abdizt 50% of water to this mixture SAMUEL KL 5 for the purpose of obtaining a White mate- \Vitnesses:

rial showing many of the properties of lano- FRIEDRICH BINDER, lin substantially as descrlbed. ROBERT W. HEINGARTNER. 

